#include <iostream>
using namespace std;
int main()
{
    int a1,b,c;
    int d = a1+c,e = a1+b,f = 10;
    /*
    int a = 1, b = 2;
    a = a + 1,b = b+a;
    if((cin>>a) || (a = 3))
    {
        cout<<"true";
    }
    else{
        cout<<false;
    }
    cout<<a;
    */
    int a;
    if(cin >> a)
       cout<<a;
    //string s = "";
    
    int * s = &a;
    if(s)
        cout<<"true";
    else
        cout<<"false";
    struct Student
    {
        string name;
        int age;
    };
    /*
    Student stu ={"zhangsan",10};
    if(stu)
        cout<<"true";
    else
        cout<<"false";
    */
}
